Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
  • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
  • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
  • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
  • F16C35/067—Fixing them in a housing
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
  • F16B19/002—Resiliently deformable pins
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
  • F16B41/005—Measures against unauthorised operation of bolts, nuts or pins
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
  • F16C33/30—Parts of ball or roller bearings
  • F16C33/58—Raceways; Race rings
  • F16C33/583—Details of specific parts of races
  • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
  • F16B19/04—Rivets; Spigots or the like fastened by riveting
  • F16B19/08—Hollow rivets; Multi-part rivets
  • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
  • F16B19/1027—Multi-part rivets
  • F16B19/1036—Blind rivets
  • F16B19/109—Temporary rivets, e.g. with a spring-loaded pin
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
  • F16B19/002—Resiliently deformable pins
  • F16B2019/006—Resiliently deformable pins made in a plurality of pieces
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
  • F16B21/06—Releasable fastening devices with snap-action
  • F16B21/065—Releasable fastening devices with snap-action with an additional locking element
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
  • F16B2200/95—Constructional details of connections not covered for in other groups of this subclass with markings, colours, indicators or the like
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
  • F16C2226/50—Positive connections
  • F16C2226/62—Positive connections with pins, bolts or dowels

Definitions

• the invention relates to a device for holding a bearing member relative to a fixed body.
• the invention relates to a device intended to be used for holding a bearing member, which supports a rotatable shaft (e.g. a prop shaft), relative a chassis of the vehicle.
• a rotatable shaft e.g. a prop shaft
• the invention has been devised for an aircraft, particularly a helicopter.
• prior art devices for holding such a bearing member relative to such a fixed body. These typically take the form of a threaded bolt which is engaged with a thread bore in the fixed body, with an end of the bolt engaging in a recess of the bearing member, so as to locate the latter.
• a threaded bolt which is engaged with a thread bore in the fixed body, with an end of the bolt engaging in a recess of the bearing member, so as to locate the latter.
• misalignment can easily occur, which can result in the end of the bolt causing damage to the bearing member. It is therefore an object of the invention to address these problems.
• a device for holding a bearing member relative to a fixed body including:
• first part having an formation for engagement with a corresponding formation on a fixed body to hold the first part relative to the fixed body, and a receiving formation for receiving and slidably supporting a generally elongate second part
• first end of the second part is configured for engagement with a part of a bearing member to hold the bearing member relative to the fixed body, and wherein a second, opposite, end of the second part supports an abutment member which prevents the first and second parts separating from each other,
• the device includes biasing means for biasing the first end of the second part away from the first part.
• bearing member positioned in a formation in the fixed body, the bearing member including an inner race, an outer race and a plurality of moveable bearing parts positioned therebetween, wherein the outer race includes a recess;
• a device according to the first aspect of the invention, wherein the engagement formation on the first part of the device is engaged with a corresponding formation on a fixed body so as to hold the first part relative to the fixed body, and wherein the first end of the second part of the device is positioned in the recess in the an outer race of the bearing member so as to hold the bearing member relative to the fixed body.
• Figure 1 is a side view of a first embodiment of a device in accordance with the first aspect of the present invention
• Figure 2 is an end view of the device of figure 1 ;
• Figure 3 is a cross-sectional view of the device of figure 1 with a first part thereof in an extended condition;
• Figure 4 is a cross-sectional view of the device of figure 1 with a first part thereof in a depressed condition
• Figure 5 is an end view of a system in accordance with the second aspect of the present invention.
• FIGs 1 to 4 show a device 10 for holding a bearing member relative to a fixed body.
• the device 10 is to be used as part of a system 100 (see Figure 5) for holding a ball bearing 50 relative to a chassis 60 of a helicopter (not shown).
• the device 10 includes a first 12 and second 14 parts which are connected to each other as described below.
• the first and second parts together form a bolt-shaped member which serves two purposes; 1 ) to locate the bearing member; and 2) to indicate whether the bearing is misaligned.
• the first part 12 has a formation, generally indicated at 12a which is threaded (although the thread is not shown) for engaging with a corresponding threaded formation 54 (see Figure 5) on the chassis 60.
• the threaded formations ensure that the first part 12 of the device is held relative to the fixed body.
• the first part 12 also includes an axially extending receiving formation 13 (see Figures 3 and 4) for receiving and slidably supporting the generally elongate second part 14.
• a first free end 15 of the second part 14 is configured for engagement with a part 55 (see Figure 5) of the bearing member 50 to hold the bearing member 50 relative to the chassis 60 so that its outer race cannot rotate.
• An opposite end 16 of the second part 14 passes through an axial bore 22 in the first part 12 and its remote end supports an abutment member 21 (which will be described in more detail later).
• the purpose of the abutment member 21 is to prevent the first and second parts 12, 14 separating from each other.
• the device 10 includes biasing means in the form of a spring 30 for biasing the first end 15 of the second part 14 away from the first part 12.
• the spring 30 is positioned completely within a respective axial bore 13 in the first part 12, which axial bore 13 communicates with the axial bore 22.
• the spring 30 is configured such that one end thereof abuts a shoulder 31 provided at the connection between the bores 13, 22 and an opposite end of the spring abuts a circumferential shoulder 32 provided on the second part 14.
• the tool engagement formation in the present example is hexagon-shaped in end view (see Figure 2) and includes a recess 19 to receive the abutment member 21 .
• the recess 19 has a shoulder 19a with which the abutment member 21 engages so as to prevent the first and second parts 12, 14 separating from each other.
• the abutment member 21 in the present example includes a circumferentially extending flange to provide a surface which engages with the shoulder 19a in the recess 19.
• the circumferentially extending flange is connected to the remote end of the second end 16 of the second part 14 by any suitable means, e.g. by a threaded formation or by welding/adhesive.
• the first part 12 includes a pair of apertures 26a, 26b which in the present example are provided such that they extend transversely through the tool engagement of formation 18. Both apertures 26a, 26b communicate with the recess 19 and provide a means for securing an indicator member 70 to the device 10. Whilst in the present example a pair of apertures 26a, 26b are shown, it is possible to provide a single aperture extending through the tool engagement formation with which a respective indicator member can be engaged.
• the indicator member which in the present example is a flexible element 70, for example a metal wire, extends through the apertures 26a, 26b and over a portion of the flange part of the abutment member 21 , thus preventing the abutment member 21 from moving completely out of the recess 19.
• Free ends of the indicating member 70 are attached to each other by appropriate means at 71 .
• the purpose of the indicator member 70 is to provide a tamper/movement evident means for visual assessment by a user.
• the bearing member 50 includes an outer race 51 , and inner race 52 and a plurality of ball bearings 53 positioned therebetween.
• the bearing member 50 is provided to support rotation of a shaft (not shown) which extends through a central aperture 56 in the bearing member 50.
• the outer race 51 of the bearing member 50 includes the recess 55 which is intended to receive the free end 15 of the second part 14, in order to hold the bearing member relative to the fixed body 60 so as to prevent a rotation thereof.
• the fixed body 60 includes a bore 54, the entrance to which is threaded and of a slightly large diameter than the remainder, in order to engage with the thread 12a of the first part 12 of the device 10.
• the second part extends 14 extends through the remainder of the bore 54 and into the recess 55 in the outer race 51 of the bearing member 50. If the free end 15 is properly aligned with the recess 55, a user can determine this simply by looking at the position of the abutment member 21 in the recess 19. If the abutment member 21 is not fully received in the recess 19, then it can be deduced that the free end 15 is not properly aligned with the recess 55. If the end 15 is not fully received in the recess 55, then it will be urged towards the first part 12, with the spring 30 being compressed thus moving the abutment member 21 out of, or substantially towards the end of, the recess 19.
• the spring is not compressed and thus the abutment member 21 moves to the bottom of the recess 19.
• the indicator member 70 can be inspected, so any movement of the abutment member can easily be noticed, e.g. by breaking or movement of the indicator member 70.
• the line indicated at A indicates the position of the end part 15 as shown in Figure 4, i.e. when the spring has been compressed due to misalignment.
• the indicator means may be provided in any suitable form so long as it can be passed through the aperture or apertures provided in the first part 12 of the device.
• a linear elongate member could be used.
• the tool formation part 18 can be any other appropriate shape so long as that it permits a user to engage an appropriate tool therewith to effect rotation of a first part 12 about its axis.
• any suitable biasing means could be used in place of the spring 30, for example, a resilient element such as a rubber or rubber like material.
• a resilient element such as a rubber or rubber like material.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Mounting Of Bearings Or Others (AREA)
• Pivots And Pivotal Connections (AREA)
• Rolling Contact Bearings (AREA)
• Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Related Child Applications (2)

Publications (2)

Family

ID=48189628

Family Applications (2)

Family Applications After (1)

Country Status (7)

Families Citing this family (2)

Family Cites Families (18)

• 2013
  • 2013-03-08 GB GB201304246A patent/GB2511572B/en active Active
• 2014
  • 2014-02-25 WO PCT/GB2014/050561 patent/WO2014135845A1/en active Application Filing
  • 2014-02-25 EP EP14709366.0A patent/EP2964969B1/de active Active
  • 2014-02-25 EP EP19180362.6A patent/EP3569884B1/de active Active
  • 2014-02-25 BR BR112015015715A patent/BR112015015715B8/pt active IP Right Grant
  • 2014-02-25 US US14/771,050 patent/US9562568B2/en active Active
  • 2014-02-25 KR KR1020157022632A patent/KR102131073B1/ko active IP Right Grant
  • 2014-02-25 RU RU2015123562A patent/RU2659167C2/ru active

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